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6–15 storeys +
Offices & mixed use
Composite frames with braced cores or moment frames, flexible open-plan floors and curtain-wall-ready edges.
Solution · Multi-storey steel buildings
Multi-storey buildings, framed in steel
Offices, hotels, hospitals, schools, car parks and mixed-use towers with composite steel frames – long spans, light foundations and fast floor cycles, designed and fabricated by World Steel to US, Australian, European and Vietnamese codes.
- 9–18 m
- Column-free floor spans composite and cellular beams
- 3–20
- Storeys – typical scope taller on request
- R30–R120
- Fire ratings by design
- EXC3 · CC3
- Certified fabrication
Faster to build, easier to change
A steel frame turns a multi-storey building into a manufactured product. Columns and beams arrive cut, drilled and coated; floors are formed with steel deck that needs no props in many spans; and the frame rises while services and façades follow floor by floor. Lighter structures need smaller foundations – a decisive advantage on soft ground and in seismic regions.
World Steel engineers and fabricates complete multi-storey frames: columns, primary and secondary beams, composite floors, braced or moment-resisting cores, stairs, canopies and façade support steel – with connections detailed for fast erection and fire protection matched to the code.
Building types
Multi-storey solutions
One frame system adapted to the use, span and height of the building.
6–15 storeys +
15–16 m clear spans
Car parks
Long-span beams give column-free parking bays, fast erection and open, naturally ventilated decks.
12–18 m +
Long-span cellular beams
Beams with web openings carry services within the structural depth – lower floor-to-floor heights for the same span.
deck + studs + slab
Composite floors
Trapezoidal steel deck with welded shear studs acts compositely with the slab – stiffer, lighter and faster floors.
Aplicaciones
Where steel frames win
01
Offices
Column-free floors and future flexibility.
02
Hotels & residential
Fast, light frames over podiums and on poor ground.
03
Hospitals & labs
Long spans, services zones and adaptable layouts.
04
Schools & universities
Short construction windows between terms.
05
Car parks
Open decks with 15–16 m clear spans.
06
Industrial multi-storey
Factories, data centres and process buildings with heavy floor loads.
Normas y cumplimiento
Designed to the codes of your market
Every frame is designed, fabricated and documented to the standards of its destination. Key references:
United States
- IBC / ASCE 7Building code, loads, wind and seismic
- AISC 360Specification for structural steel buildings
- AISC 341Seismic provisions where SDC requires
- SDISteel deck design and installation standards
- AWS D1.1 / D1.3Structural and sheet-steel welding
- Fire
- UL 263 / ASTM E119 rated assemblies per IBC Chapter 7
Australia / NZ
- AS/NZS 1170Structural design actions
- AS 4100Steel structures
- AS/NZS 2327Composite structures
- AS/NZS 5131 Certificación WSCFabrication and erection – World Steel certified CC3
- Fire
- NCC fire-resistance levels, AS 1530.4 / AS 4100 Section 12
Europe
- EN 1993-1-1Design of steel structures
- EN 1994-1-1Design of composite steel and concrete structures
- EN 1993-1-2Structural fire design
- EN 1998-1Seismic design where required
- EN 1090-2 Certificación WSCExecution – EXC2 / EXC3 · World Steel CE marking
- Fire protection
- Intumescent coatings assessed to EN 13381-8
Vietnam
- TCVN 2737Loads and actions
- TCVN 5575Steel structures – design
- TCVN 9386Seismic design
- QCVN 06:2022/BXDFire safety – fire resistance of structures
- TCVN 170:2007Fabrication, assembly and acceptance
Resumen solo orientativo: prevalecen la especificación del proyecto, la edición del código adoptada y la autoridad competente.
Ingeniería
Fire protection matched to the code
Fire resistance is planned with the structure: section sizes, exposure and required rating decide between intumescent coatings, boards or sprayed protection. Intumescent systems can be applied in our factory under controlled conditions, so the frame arrives protected and site work shrinks.
Where the code allows, fire engineering and composite slab behaviour reduce protection on secondary beams – a significant cost and time saving.
Ingeniería
Connections designed for erection speed
Simple fin-plate and end-plate connections for gravity framing, bolted splices every two to three storeys and braced or moment-resisting cores for stability – all detailed in a 3D model, with clash-free penetrations for services.
Columns are spliced and erected in multi-storey lifts, deck is laid as a working platform, and the floor cycle is set by the crane, not by concrete curing.
Especificaciones
What we supply
- Frame
- Hot-rolled and built-up columns, primary and secondary beams, transfer girders, splices and base plates
- Floors
- Composite beams, cellular / castellated beams, steel deck and shear studs (by specialist where required)
- Stability
- Braced cores, moment frames, seismic systems – see seismic steel
- Fire
- Shop-applied intumescent coatings, primers compatible with boards or sprayed systems
- Secondary steel
- Stairs, balustrades, canopies, façade and plant support steel
- Documentation
- 3D model, erection drawings, connection calculations, QC records and as-built documents
Proceso
How we deliver
- 1
Scheme & grid
Structural scheme, spans, floor system and stability concept.
- 2
Design & modelling
Calculations, connection design and a coordinated 3D model.
- 3
Certified fabrication
Cutting, drilling, welding, studs and shop fire protection.
- 4
Sequenced delivery
Loads packed by floor and erection zone.
- 5
Erection support
Erection drawings, sequence and supervision on request.
- 6
Handover
Quality dossier, as-built model and maintenance information.
EN 1090 EXC3 · CE
AS/NZS 5131 CC3
IAS AC472FAQ
Preguntas frecuentes
How tall can a steel-framed building be?
Steel frames are used from low-rise to super-tall buildings. Our typical scope covers buildings of about 3–20 storeys with composite floors and braced or moment-frame stability systems; taller buildings are reviewed case by case.
Is a steel frame more expensive than concrete?
Frame cost per square metre can be similar or higher, but steel frames are lighter (smaller foundations), faster to erect and give longer spans – the total project cost and programme are often lower, especially on poor ground or tight schedules.
How is the steel frame protected against fire?
With intumescent coatings (often applied in our factory), boards or sprayed systems, sized to the required fire rating, section factor and the tested product data – or by fire engineering where the code allows.
What spans are possible?
About 6–12 m with composite beams, 12–18 m and more with cellular beams, and around 15–16 m clear spans for car parks – final sizes depend on loads, vibration and services.
Can you supply in seismic regions?
Yes – braced and moment frames are fabricated to AISC 341, EN 1998, NZS 3404 or TCVN 9386 requirements as specified. See our seismic steel solution for details.
Contenido relacionado
Productos de acero
Singapore
New Zealand
Planning a multi-storey building?
Send us the architectural drawings and the design code – our engineers return a structural scheme, steel tonnage estimate and a delivered price.
Condiciones de entrega · Incoterms® 2020
Entregado en las condiciones que necesita
World Steel cotiza en fábrica, franco a bordo o entregado en su puerto u obra. El embalaje de exportación, los documentos y el embarque desde Ciudad Ho Chi Minh forman parte del servicio.
Comparar los Incoterms® 2020 →FCAFree CarrierFOBFree On BoardCFRCost and FreightCIFCost, Insurance and FreightCPTCarriage Paid ToCIPCarriage and Insurance Paid To
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